TY  - CHAP
A1  - Ziolko, Christoph
A1  - Fricke, Barbara
A1  - Anthrakidis, Anette
A1  - Hoffschmidt, Bernhard
A1  - Dillig, Marius
A1  - Giese, Frank
A1  - Schwarzbözl, Peter
T1  - Ökobilanzielle Aspekte technologischer Entwicklungen des Solarturmkraftwerks
T2  - Forschung und Entwicklung für solarthermische Kraftwerke : 14. Kölner Sonnenkolloquium Mittwoch, 13. Juli 2011, im Auditorium des Campus Jülich der FH Aachen : Kurzfassungen der Vorträge und Poster
Y1  - 2011
SP  - 2 S.
PB  - DLR
CY  - Köln
ER  - 
TY  - CHAP
A1  - Ziolko, C.
A1  - Schmitz, M.
A1  - Sattler, Johannes, Christoph
A1  - Khedim, Ahmed
A1  - Hoffschmidt, Bernhard
T1  - AlSol - the open volumetric receiver technology moves to Africa
T2  - SolarPACES 2010 : the CSP Conference: electricity, fuels and clean water from concentrated solar energy ; 21 to 24 September 2010, Perpignan, France
Y1  - 2010
SP  - 93
EP  - 94
PB  - Soc. OSC
CY  - Saint Maur
ER  - 
TY  - CHAP
A1  - Zahra, Mahdi
A1  - Phani Srujan, Merige
A1  - Caminos, Ricardo Alexander Chico
A1  - Schmitz, Pascal
A1  - Herrmann, Ulf
A1  - Teixeira Boura, Cristiano José
A1  - Schmitz, Mark
A1  - Gielen, Hans
A1  - Gedle, Yibekal
A1  - Dersch, Jürgen
T1  - Modeling the thermal behavior of solar salt in electrical resistance heaters for the application in PV-CSP hybrid power plants
T2  - SOLARPACES 2020
N2  - Concentrated Solar Power (CSP) systems are able to store energy cost-effectively in their integrated thermal energy storage (TES). By intelligently combining Photovoltaics (PV) systems with CSP, a further cost reduction of solar power plants is expected, as well as an increase in dispatchability and flexibility of power generation. PV-powered Resistance Heaters (RH) can be deployed to raise the temperature of the molten salt hot storage from 385 °C up to 565 °C in a Parabolic Trough Collector (PTC) plant. To avoid freezing and decomposition of molten salt, the temperature distribution in the electrical resistance heater is investigated in the present study. For this purpose, a RH has been modeled and CFD simulations have been performed. The simulation results show that the hottest regions occur on the electric rod surface behind the last baffle. A technical optimization was performed by adjusting three parameters: Shell-baffle clearance, electric rod-baffle clearance and number of baffles. After the technical optimization was carried out, the temperature difference between the maximum temperature and the average outlet temperature of the salt is within the acceptable limits, thus critical salt decomposition has been avoided. Additionally, the CFD simulations results were analyzed and compared with results obtained with a one-dimensional model in Modelica.
KW  - Solar thermal technologies
KW  - Hybrid energy system
KW  - Concentrated solar power
KW  - Energy storage
KW  - Photovoltaics
Y1  - 2022
SN  - 978-0-7354-4195-8
U6  - http://dx.doi.org/10.1063/5.0086268
SN  - 1551-7616 (online)
SN  - 0094-243X (print)
N1  - 26th International Conference on Concentrating Solar Power and Chemical Energy Systems
28 September–2 October 2020
Freiburg, Germany
IS  - 2445 / 1
PB  - AIP conference proceedings / American Institute of Physics
CY  - Melville, NY
ER  - 
TY  - CHAP
A1  - Warerkar, Shashikant
A1  - Schmitz, Stefan
A1  - Göttsche, Joachim
A1  - Hoffschmidt, Bernhard
A1  - Reißel, Martin
A1  - Tamme, Rainer
T1  - Air-sand heat exchanger for high-temperature storage
T2  - Proceedings of the ASME 3rd International Conference on Energy Sustainability : July 19 - 23, 2009, San Francisco, California, USA. Vol. 2
Y1  - 2009
SN  - 978-0-7918-4890-6
SP  - 655
EP  - 661
PB  - ASME
CY  - New York, NY
ER  - 
TY  - CHAP
A1  - Warerkar, S.
A1  - Schmitz, S.
A1  - Göttsche, Joachim
A1  - Hoffschmidt, Bernhard
A1  - Tamme, R.
T1  - Performance analysis of an air-sand heat exchanger prototype for high-temperature storage
T2  - EuroSun 2008 : 1st International Conference on Solar Heating, Cooling and Buildings ; 7th - 10th October 2008, Lisbon, Portugal : key lectures / ISES, International Solar Energy Society. Vol. 1
Y1  - 2008
SN  - 978-1-61782-228-5
SP  - 2215
EP  - 2222
PB  - Sociedade Portuguesa De Energia Solar (SPES)
CY  - Lissabon
ER  - 
TY  - CHAP
A1  - Voß, Alfred
A1  - Bundschuh, Vinzenz
A1  - Meliß, Michael
A1  - Oesterwind, Dieter
T1  - Andere Primärenergiequellen
T2  - Nichtkonventionelle Energiesysteme : Vorträge der VDI-Tagung Düsseldorf 1974. - (VDI-Bericht. 224.)
Y1  - 1974
SN  - 3-18-090224-8
SP  - 117
EP  - 125
PB  - VDI-Verl.
CY  - Düsseldorf
ER  - 
TY  - CHAP
A1  - von Heesen, W.
A1  - Faber, Christian
T1  - Modenfilter als Schalldämpfer für axiale Turbomaschinen : Möglichkeiten und Grenzen des Einsatzes
T2  - Schalltechnik '92 : Lärmminderung durch Schalldämpfer ; Tagung Böblingen, 19. und 20. Mai 1992 / Normenausschuß Akustik, Lärmminderung und Schwingungstechnik (NALS) im DIN und VDI. VDI-Berichte. 938
Y1  - 1992
SN  - 3-18-090938-2
SP  - 241
EP  - 260
PB  - VDI-Verl.
CY  - Düsseldorf
ER  - 
TY  - CHAP
A1  - Vitting, Eva
T1  - Designprojekte zu Solarenergie: Wie kommunizieren wir unsere Technik?
T2  - Forschung und Entwicklung für solarthermische Kraftwerke : 14. Kölner Sonnenkolloquium Mittwoch, 13. Juli 2011, im Auditorium des Campus Jülich der FH Aachen : Kurzfassungen der Vorträge und Poster
Y1  - 2011
SP  - 3 S.
PB  - DLR
CY  - Köln
ER  - 
TY  - CHAP
A1  - Vaeßen, Christiane
A1  - Alexopoulos, Spiros
A1  - Kluczka, Sven
A1  - Sattler, Johannes Christoph
A1  - Roeb, M.
A1  - Neises, M.
A1  - Abdellatif, T.
T1  - Analyse der Verfahren zur solaren Methanolproduktion aus CO2
T2  - Forschung und Entwicklung für solarthermische Kraftwerke : 14. Kölner Sonnenkolloquium Mittwoch, 13. Juli 2011, im Auditorium des Campus Jülich der FH Aachen : Kurzfassungen der Vorträge und Poster
Y1  - 2011
SP  - 2 S.
PB  - DLR
CY  - Köln
ER  - 
TY  - CHAP
A1  - Teixeira Boura, Cristiano José
A1  - Niederwestberg, Stefan
A1  - McLeod, Jacqueline
A1  - Herrmann, Ulf
A1  - Hoffschmidt, Bernhard
T1  - Development of heat exchanger for high temperature energy storage with bulk materials
T2  - AIP Conference Proceedings
Y1  - 2016
U6  - http://dx.doi.org/10.1063/1.4949106
VL  - 1734
IS  - 1
SP  - 050008-1
EP  - 050008-7
ER  - 
TY  - CHAP
A1  - Teixeira Boura, Cristiano José
A1  - Eckstein, J.
A1  - Felinks, J.
A1  - Göttsche, Joachim
A1  - Hoffschmidt, Bernhard
A1  - Schmitz, S.
T1  - 3-D CFD simulation of an air-sand heat exchanger
T2  - SolarPACES 2011 : concentrating solar power and chemical energy systems : 20 - 23 September, 2011, Granada, Spain
Y1  - 2011
CY  - Granada
ER  - 
TY  - CHAP
A1  - Späte, Frank
A1  - Wollscheid, Georg
A1  - Meliß, Michael
T1  - Erdreichwärmetauscher im Solar-Campus Jülich
T2  - Deutschlands Weg in eine solare Zukunft : Tagungsband; 26. - 30. Juni 1998 Fachhochschule Köln / 11. Internationales Sonnenforum
Y1  - 1998
SP  - 591
EP  - 598
PB  - Solar Promotion
CY  - München
ER  - 
TY  - CHAP
A1  - Späte, Frank
A1  - Hubrich, Jörg
A1  - Keip, Wolfgang
A1  - Meliß, Michael
T1  - Der Solar-Campus Jülich - Stand der Arbeiten
T2  - Deutschlands Weg in eine solare Zukunft : Tagungsband; 26. - 30. Juni 1998 Fachhochschule Köln / 11. Internationales Sonnenforum
Y1  - 1998
SP  - 666
EP  - 672
PB  - Solar Promotion
CY  - München
ER  - 
TY  - CHAP
A1  - Späte, Frank
A1  - Hafner, B.
A1  - Schwarzer, Klemens
T1  - A system for solar process heat for decentralized applications in developing countries
T2  - ISES 1999 Solar World Congress, Jerusalem, Israel, July 4-9, 1999 : conference proceedings / ed. Gershon Grossman. Vol. 3
Y1  - 2000
SN  - 0-080-043895-4
SP  - 236
EP  - 291
PB  - Elsevier
CY  - Oxford
ER  - 
TY  - CHAP
A1  - Schwarzer, Klemens
A1  - Wiedenfeld, M.
A1  - Bansal, Narenda K.
A1  - Ertl, Karl-Heinz
T1  - A novel solar sterilization and water destillation system : experiment and thermodynamic analysis
T2  - 1991 Solar World Congress : : proceedings of the Biennial Congress of the International Solar Energy Society, Denver, Colorado, USA, 19 - 23 August 1991 / ed. by M. E. Arden. Bd. 2,II
Y1  - 1991
SN  - 0-08-041690-x
SP  - 2276
EP  - 2281
PB  - Pergamon Pr.
CY  - Oxford
ER  - 
TY  - CHAP
A1  - Schwarzer, Klemens
A1  - Vieira, Maria Eugenia
A1  - Müller, Christoph
A1  - Lehmann, Harry
A1  - Coutinho, Lecimara
T1  - Modular solar thermal desalination system with flat plate collector
T2  - RIO 3 - World Climate & Energy Event : proceedings of the international conference held in Rio de Janeiro, Brazil, 1 -5 december 2003 / chief-ed.: Stefan Krauter ...
Y1  - 2003
SN  - 85-902710-2-1
SP  - 281
EP  - 286
PB  - Krauter
CY  - Rio de Janeiro
ER  - 
TY  - CHAP
A1  - Schwarzer, Klemens
A1  - Schwarzer, Tarik
T1  - Stand und Entwicklung der Meerwasserentsalzung
T2  - Neue Herausforderungen und Chancen in der Wasserversorgung : Seminar des Fachgebiets Wasserversorgung und Grundwasserschutz im Rahmen des 1. Darmstädter Ingenieurkongresses Bau und Umwelt am 14. und 15.09.2009. Schriftenreihe WAR. 205
Y1  - 2009
SN  - 978-3-940897-01-5
SP  - 99
EP  - 120
PB  - Inst. WAR
CY  - Darmstadt
ER  - 
TY  - CHAP
A1  - Schwarzer, Klemens
A1  - Kroker, Jan
A1  - Rusack, Markus
T1  - Technical improvement of a small modular parabolic trough collector
T2  - EuroSun 2008 : 1st International Conference on Solar Heating, Cooling and Buildings ; 7th - 10th October 2008, Lisbon, Portugal : key lectures / ISES, International Solar Energy Society. Vol. 1
Y1  - 2008
SN  - 978-1-61782-228-5
SP  - 1395
EP  - 1402
PB  - Sociedade Portuguesa De Energia Solar (SPES)
CY  - Lissabon
ER  - 
TY  - CHAP
A1  - Schwarzer, Klemens
A1  - Krings, T.
A1  - Faber, Christian
A1  - Hafner, B.
T1  - Erfahrungen mit Solarkochern verschiedener Größe für Familien und Institutionen
T2  - Deutschlands Weg in eine solare Zukunft : Tagungsband; 26. - 30. Juni 1998 Fachhochschule Köln / 11. Internationales Sonnenforum
Y1  - 1998
SP  - 801
EP  - 809
PB  - Solar Promotion
CY  - München
ER  - 
TY  - CHAP
A1  - Schwarzer, Klemens
A1  - Hafner, B.
A1  - Meer, A. von
A1  - Krings, T.
T1  - Simulation and dimensioning program for solar cookers with temporal heat storage and comparison with measurements
T2  - Harmony with nature : : proceedings / ISES Solar World Congress, Budapest 1993. International Solar Energy Society, Hungarian Section (H-ISES); Hungarian Solar Energy Society (HSES). Bd 5: Active systems
Y1  - 1993
SP  - 473
EP  - 478
PB  - Hungarian Energy Society
CY  - Budapest
ER  - 
TY  - CHAP
A1  - Schwarzer, Klemens
A1  - Faber, Christian
A1  - Meliß, Michael
A1  - Späte, F.
T1  - Solar-Institut Jülich (SIJ), Fachhochschule Aachen, Division Jülich Germany
T2  - Harmony with nature : proceedings / ISES Solar World Congress, Budapest 1993. International Solar Energy Society, Hungarian Section (H-ISES); Hungarian Solar Energy Society (HSES). Vol. 1: Energy policy, environment, education
Y1  - 1993
SP  - 349
EP  - 354
PB  - Hungarian Energy Society
CY  - Budapest
ER  - 
TY  - CHAP
A1  - Schwarzer, Klemens
A1  - Bieger, W.
A1  - Ricking, N.
A1  - Bansal, Narenda K.
T1  - Solar cooker with a rock bed cum oil storage
T2  - 1991 Solar World Congress : : proceedings of the Biennial Congress of the International Solar Energy Society, Denver, Colorado, USA, 19 - 23 August 1991 / ed. by M. E. Arden. Bd. 3,II
Y1  - 1991
SN  - 0-08-041690-x
SP  - 3751
EP  - 3756
PB  - Pergamon Pr.
CY  - Oxford
ER  - 
TY  - CHAP
A1  - Schwarzer, Klemens
A1  - Bieger, W.
A1  - Ricking, N.
T1  - Entwicklung und Erprobung eines solaren Kochers mit temporärem Speicher
T2  - Rationelle Energieverwendung und Nutzung erneuerbarer Energiequellen im regionalen und kommunalen Bereich : : welchen Beitrag können sie zur Abwehr der Klimabedrohung leisten?; Frankfurt, 9. - 12. Oktober 1990; [Tagungsbericht] / 7. Internationales Sonnenforum. [Veranst.: Deutsche Gesellschaft für Sonnenenergie e.V., Deutsche Sektion der ISES. Red.: A. Hohmann; H. H. Hohmann]. Bd. 2.
Y1  - 1990
SP  - 1002
EP  - 1007
PB  - DGS-Sonnenenergie-Verl.
CY  - München
ER  - 
TY  - CHAP
A1  - Schwarzer, Klemens
T1  - A new kind of efficient solar cookers with and without temporary heat storage
T2  - Advances in solar cooking : proceedings of the First World Conference on Solar Cooking, Stockton, California, USA, June 19 - 20, 1992 / ed. by Edwin Pejack
Y1  - 1992
SP  - 107
EP  - 112
PB  - Solar Box Cookers International
CY  - Sacramento, Calif.
ER  - 
TY  - CHAP
A1  - Schwarzer, Klemens
T1  - Solarthermisches Entsalzungssystem mit Wärmerückgewinnung - Erste Feldtestergebnisse
T2  - 16. Symposium Thermische Solarenergie : 17. bis 19. Mai 2006, Kloster Banz, Bad Staffelstein
Y1  - 2006
SN  - 3-934681-45-X
SP  - 173
EP  - 178
PB  - Ostbayer. Technologie-Transfer-Inst.
CY  - Regensburg
ER  - 
TY  - CHAP
A1  - Schwarzer, Klemens
T1  - Desalination systems with renewable energies
T2  - DME Seminar Desalination and Renewable Energies : June 19 and 20 2008, Solar Institut Jülich / Deutsche Meerwasserentsalzung e.V.
Y1  - 2008
SN  - 978-3-86861-017-8
PB  - DME
CY  - Duisburg
ER  - 
TY  - CHAP
A1  - Schwarzbözl, Peter
A1  - Pomp, Stefan
A1  - Koll, Gerrit
A1  - Hennecke, Klaus
A1  - Hartz, Thomas
A1  - Schmitz, Mark
A1  - Hoffschmidt, Bernhard
T1  - The solar tower Jülich - first operational experiences and test results
T2  - SolarPACES 2010 : the CSP Conference: electricity, fuels and clean water from concentrated solar energy ; 21 to 24 September 2010, Perpignan, France
Y1  - 2010
SP  - 8
EP  - 9
PB  - Soc. OSC
CY  - Saint Maur
ER  - 
TY  - CHAP
A1  - Schwager, Christian
A1  - Teixeira Boura, Cristiano José
A1  - Flesch, Robert
A1  - Alexopoulos, Spiros
A1  - Herrmann, Ulf
T1  - Improved efficiency prediction of a molten salt receiver based on dynamic cloud passage simulation
T2  - AIP Conference Proceedings
Y1  - 2019
SN  - 978-0-7354-1866-0
U6  - http://dx.doi.org/10.1063/1.5117566
VL  - 2126
IS  - 1
SP  - 030054-1
EP  - 030054-8
ER  - 
TY  - CHAP
A1  - Schwager, Christian
A1  - Angele, Florian
A1  - Schwarzbözl, Peter
A1  - Teixeira Boura, Cristiano José
A1  - Herrmann, Ulf
T1  - Model predictive assistance for operational decision making in molten salt receiver systems
T2  - SolarPACES: Solar Power & Chemical Energy Systems
N2  - Despite the challenges of pioneering molten salt towers (MST), it remains the leading technology in central receiver power plants today, thanks to cost effective storage integration and high cost reduction potential. The limited controllability in volatile solar conditions can cause significant losses, which are difficult to estimate without comprehensive modeling [1]. This paper presents a Methodology to generate predictions of the dynamic behavior of the receiver system as part of an operating assistance system (OAS). Based on this, it delivers proposals if and when to drain and refill the receiver during a cloudy period in order maximize the net yield and quantifies the amount of net electricity gained by this. After prior analysis with a detailed dynamic two-phase model of the entire receiver system, two different reduced modeling approaches where developed and implemented in the OAS. A tailored decision algorithm utilizes both models to deliver the desired predictions efficiently and with appropriate accuracy.
KW  - Power plants
KW  - Associated liquids
KW  - Decision theory
KW  - Electrochemistry
Y1  - 2023
SN  - 978-0-7354-4623-6
U6  - http://dx.doi.org/10.1063/5.0151514
SN  - 1551-7616 (online)
SN  - 0094-243X (print)
N1  - 27th International Conference on Concentrating Solar Power and Chemical Energy Systems
27 September–1 October 2021
Online
IS  - 2815 / 1
PB  - AIP conference proceedings / American Institute of Physics
CY  - Melville, NY
ER  - 
TY  - CHAP
A1  - Schwager, Christian
A1  - Angele, Florian
A1  - Nouri, Bijan
A1  - Schwarzbözl, Peter
A1  - Teixeira Boura, Cristiano José
A1  - Herrmann, Ulf
T1  - Impact of DNI forecast quality on performance prediction for a commercial scale solar tower: Application of nowcasting DNI maps to dynamic solar tower simulation
T2  - SolarPACES conference proceedings
N2  - Concerning current efforts to improve operational efficiency and to lower overall costs of concentrating solar power (CSP) plants with prediction-based algorithms, this study investigates the quality and uncertainty of nowcasting data regarding the implications for process predictions. DNI (direct normal irradiation) maps from an all-sky imager-based nowcasting system are applied to a dynamic prediction model coupled with ray tracing. The results underline the need for high-resolution DNI maps in order to predict net yield and receiver outlet temperature realistically. Furthermore, based on a statistical uncertainty analysis, a correlation is developed, which allows for predicting the uncertainty of the net power prediction based on the corresponding DNI forecast uncertainty. However, the study reveals significant prediction errors and the demand for further improvement in the accuracy at which local shadings are forecasted.
KW  - Process prediction
KW  - DNI forecasting
KW  - Nowcasting
KW  - Uncertainty analysis
KW  - Molten salt receiver system,
Y1  - 2024
U6  - http://dx.doi.org/10.52825/solarpaces.v1i.675
SN  - 2751-9899 (online)
N1  - 28th International Conference on Concentrating Solar Power and Chemical Energy Systems, 27-30 September, Albuquerque, NM, USA
IS  - Vol. 1
PB  - TIB Open Publishing
CY  - Hannover
ER  - 
TY  - CHAP
A1  - Schulze-Buxloh, Lina
A1  - Groß, Rolf Fritz
A1  - Ulbrich, Michelle
T1  - Digital planning using building information modelling and virtual reality: new approach for students’ remote practical training under lockdown conditions in the course of smart building engineering
T2  - Proceedings of International Conference on Education in Mathematics, Science and Technology 2021
N2  - The worldwide Corona pandemic has severely restricted student projects in the higher semesters of engineering courses. In order not to delay the graduation, a new concept had to be developed for projects under lockdown conditions. Therefore, unused rooms at the university should be digitally recorded in order to develop a new usage concept as laboratory rooms. An inventory of the actual state of the rooms was done first by taking photos and listing up all flaws and peculiarities. After that, a digital site measuring was done with a 360° laser scanner and these recorded scans were linked to a coherent point cloud and transferred to a software for planning technical building services and supporting Building Information Modelling (BIM). In order to better illustrate the difference between the actual and target state, two virtual reality models were created for realistic demonstration. During the project, the students had to go through the entire digital planning phases. Technical specifications had to be complied with, as well as documentation, time planning and cost estimate. This project turned out to be an excellent alternative to on-site practical training under lockdown conditions and increased the students’ motivation to deal with complex technical questions.
KW  - smart building engineering
KW  - building information modelling
KW  - virtual reality
KW  - lockdown conditions
KW  - emote practical training
Y1  - 2021
SN  - 978-1-952092-17-6
N1  - April 1-4, 2021 in Antalya, Turkey.
SP  - 118
EP  - 123
PB  - ISTES Organization
CY  - San Antonio, TX
ER  - 
TY  - CHAP
A1  - Schulze-Buxloh, Lina
A1  - Groß, Rolf Fritz
T1  - Miniature urban farming plant: a complex educational “Toy” for engineering students
T2  - The Future of Education 11th Edition 2021
N2  - Urban farming is an innovative and sustainable way of food production and is becoming more and more important in smart city and quarter concepts. It also enables the production of certain foods in places where they usually dare not produced, such as production of fish or shrimps in large cities far away from the coast. Unfortunately, it is not always possible to show students such concepts and systems in real life as part of courses: visits of such industry plants are sometimes not possible because of distance or are permitted by the operator for hygienic reasons. In order to give the students the opportunity of getting into contact with such an urban farming system and its complex operation, an industrial urban farming plant was set up on a significantly smaller scale. Therefore, all needed technical components like water aeriation, biological and mechanical filtration or water circulation have been replaced either by aquarium components or by self-designed parts also using a 3D-printer. Students from different courses like mechanical engineering, smart building engineering, biology, electrical engineering, automation technology and civil engineering were involved in this project. This “miniature industrial plant” was also able to start operation and has now been running for two years successfully. Due to Corona pandemic, home office and remote online lectures, the automation of this miniature plant should be brought to a higher level in future for providing a good control over the system and water quality remotely. The aim of giving the student a chance to get to know the operation of an urban farming plant was very well achieved and the students had lots of fun in “playing” and learning with it in a realistic way.
KW  - urban farming
KW  - food production
KW  - smart engineering
KW  - 3D printing
KW  - sustainability
Y1  - 2021
N1  - FOE 2021 : The Future of Education International Conference – Fully Virtual Edition; 01.07.2021-02.07.2021; Florence, Italy
ER  - 
TY  - CHAP
A1  - Schulze-Buxloh, Lina
A1  - Groß, Rolf Fritz
T1  - Interdisciplinary Course Smart Building Engineering: A new approach of teaching freshmen in remote teamwork project under pandemic restrictions
T2  - New Perspectives in Science Education -International Conference (virtual event, 18-19 March 2021)
N2  - In the context of the Corona pandemic and its impact on teaching like digital lectures and exercises a new concept especially for freshmen in demanding courses of Smart Building Engineering became necessary. As there were hardly any face-to-face events at the university, the new teaching concept should enable a good start into engineering studies under pandemic conditions anyway and should also replace the written exam at the end. The students should become active themselves in small teams instead of listening passively to a lecture broadcast online with almost no personal contact. For this purpose, a role play was developed in which the freshmen had to work out a complete solution to the realistic problem of designing, construction planning and implementing a small guesthouse. Each student of the team had to take a certain role like architect, site manager, BIM-manager, electrician and the technitian for HVAC installations. Technical specifications must be complied with, as well as documentation, time planning and cost estimate. The final project folder had to contain technical documents like circuit diagrams for electrical components, circuit diagrams for water and heating, design calculations and components lists. On the other hand construction schedule, construction implementation plan, documentation of the construction progress and minutes of meetings between the various trades had to be submitted as well. In addition to the project folder, a model of the construction project must also be created either as a handmade model or as a digital 3D-model using Computer-aided design (CAD) software. The first steps in the field of Building information modelling (BIM) had also been taken by creating a digital model of the building showing the current planning status in real time as a digital twin. This project turned out to be an excellent training of important student competencies like teamwork, communication skills, and self -organisation and also increased motivation to work on complex technical questions. The aim of giving the student a first impression on the challenges and solutions in building projects with many different technical trades and their points of view was very well achieved and should be continued in the future.
KW  - Freshmen
KW  - roleplay
KW  - Smart Building Engineering
KW  - BIM
KW  - remote teamwork
Y1  - 2021
N1  - New Perspectives in Science Education - 10th Edition
18-19 March 2021
Fully Virtual Conference
PB  - Filodiritto
CY  - Bologna
ER  - 
TY  - CHAP
A1  - Schulte-Fischedick, Jan
A1  - Tamme, Rainer
A1  - Herrmann, Ulf
T1  - CFD Analysis of the Cool Down Behaviour of Molten Salt Thermal Storage Systems
T2  - ASME 2008 2nd International Conference on Energy Sustainability collocated with the Heat Transfer, Fluids Engineering, and 3rd Energy Nanotechnology Conferences, ASME 2008 2nd International Conference on Energy Sustainability, Jacksonville, Florida, USA, August 10–14, 2008. - Vol. 2
Y1  - 2009
SN  - 978-0-7918-4320-8
U6  - http://dx.doi.org/doi:10.1115/ES2008-54101
N1  - Paper No. ES2008-54101
SP  - 515
EP  - 524
PB  - ASME
CY  - New York, NY
ER  - 
TY  - CHAP
A1  - Schulte, Jonas
A1  - Schwager, Christian
A1  - Noureldin, Kareem
A1  - May, Martin
A1  - Teixeira Boura, Cristiano José
A1  - Herrmann, Ulf
T1  - Gradient controlled startup procedure of a molten-salt power-to-heat energy storage plant based on dynamic process simulation
T2  - SolarPACES: Solar Power & Chemical Energy Systems
N2  - The integration of high temperature thermal energy storages into existing conventional power plants can help to reduce the CO2 emissions of those plants and lead to lower capital expenditures for building energy storage systems, due to the use of synergy effects [1]. One possibility to implement that, is a molten salt storage system with a powerful power-to-heat unit. This paper presents two possible control concepts for the startup of the charging system of such a facility. The procedures are implemented in a detailed dynamic process model. The performance and safety regarding the film temperatures at heat transmitting surfaces are investigated in the process simulations. To improve the accuracy in predicting the film temperatures, CFD simulations of the electrical heater are carried out and the results are merged with the dynamic model. The results show that both investigated control concepts are safe regarding the temperature limits. The gradient controlled startup performed better than the temperature-controlled startup. Nevertheless, there are several uncertainties that need to be investigated further.
KW  - Power plants
KW  - Energy storage
KW  - Associated liquids
Y1  - 2023
SN  - 978-0-7354-4623-6
U6  - http://dx.doi.org/10.1063/5.0148741
SN  - 1551-7616 (online)
SN  - 0094-243X (print)
N1  - 27th International Conference on Concentrating Solar Power and Chemical Energy Systems
27 September–1 October 2021
Online
IS  - 2815 / 1
PB  - AIP conference proceedings / American Institute of Physics
CY  - Melville, NY
ER  - 
TY  - CHAP
A1  - Schulte, Jonas
A1  - Schwager, Christian
A1  - Frantz, Cathy
A1  - Schloms, Felix
A1  - Teixeira Boura, Cristiano José
A1  - Herrmann, Ulf
T1  - Control concept for a molten salt receiver in star design: Development, optimization and testing with cloud passage scenarios
T2  - SolarPACES conference proceedings
N2  - A promising approach to reduce the system costs of molten salt solar receivers is to enable the irradiation of the absorber tubes on both sides. The star design is an innovative receiver design, pursuing this approach. The unconventional design leads to new challenges in controlling the system. This paper presents a control concept for a molten salt receiver system in star design. The control parameters are optimized in a defined test cycle by minimizing a cost function. The control concept is tested in realistic cloud passage scenarios based on real weather data. During these tests, the control system showed no sign of unstable behavior, but to perform sufficiently in every scenario further research and development like integrating Model Predictive Controls (MPCs) need to be done. The presented concept is a starting point to do so.
KW  - Molten salt receiver
KW  - Star design
KW  - Control optimization
KW  - Cloud passages
Y1  - 2023
U6  - http://dx.doi.org/10.52825/solarpaces.v1i.693
SN  - 2751-9899 (online)
N1  - 28th International Conference on Concentrating Solar Power and Chemical Energy Systems, 27-30 September, Albuquerque, NM, USA
IS  - Vol. 1
PB  - TIB Open Publishing
CY  - Hannover
ER  - 
TY  - CHAP
A1  - Schorn, Christian
A1  - Weis, Fabian
A1  - Anthrakidis, Anette
A1  - Schwarzer, Klemens
A1  - Schmitz, Mark
A1  - Herrmann, Ulf
T1  - Entwicklung und Bewertung eines Parabolrinnenkollektors zur Prozesswärmebereitstellung
T2  - 26. Symposium Thermische Solarenergie, 20.-22.04.2016 in Bad Staffelstein
Y1  - 2016
N1  - 26. OTTI Symposium Thermische Solarenergie
SP  - 1
EP  - 13
ER  - 
TY  - CHAP
A1  - Sauerborn, Markus
A1  - Liebenstund, Lena
A1  - Raue, Markus
A1  - Mang, Thomas
A1  - Herrmann, Ulf
A1  - Dueing, Andreas
T1  - Analytic method for material aging and quality analyzing to forecast long time stability of plastic micro heliostat components
T2  - AIP Conference Proceedings
Y1  - 2017
U6  - http://dx.doi.org/10.1063/1.4984388
VL  - 1850
IS  - 1
SP  - 030045-1
EP  - 030045-8
ER  - 
TY  - CHAP
A1  - Sauerborn, Markus
A1  - Klimek, J.
A1  - Hoffschmidt, Bernhard
A1  - Essen, H.
A1  - Sieger, S.
A1  - Biegel, G.
A1  - Göttsche, Joachim
A1  - Hilger, Patrick
T1  - Eurosun 2012 : radar technology for heliostat posititon control
T2  - Eurosun 2012 : Solar energy for a brighter future : conference proceedings : Rijeka, 18.-22.09.2012
Y1  - 2012
SP  - ID 80
CY  - Rijeka
ER  - 
TY  - CHAP
A1  - Sauerborn, Markus
A1  - Hoffschmidt, Bernhard
A1  - Telle, R.
A1  - Wagner, M.
T1  - Heatable optical analyse system for high temperature absorbers
T2  - 30th ISES Biennial Solar World Congress 2011 : : Kassel, Germany, 28 August - 2 September 2011. Vol. 5
Y1  - 2012
SN  - 978-1-61839-364-7
SP  - 3852
EP  - 3860
PB  - Curran
CY  - Red Hook, NY
ER  - 
TY  - CHAP
A1  - Sauerborn, Markus
A1  - Hoffschmidt, Bernhard
A1  - Göttsche, Joachim
A1  - Schmitz, S.
A1  - Rebholz, C.
A1  - Ansorge, F.
A1  - Ifland, D.
T1  - Mini-Spiegel-Array für solarthermische Kraftwerke : [Vortragsfolien]
T2  - DPG-Frühjahrstagung, Arbeitskreis Energie, Hamburg 03.03.2009
Y1  - 2009
SP  - 1
EP  - 10
ER  - 
TY  - CHAP
A1  - Sauerborn, Markus
A1  - Arshadi, S.
A1  - Rohrmoser, R.
T1  - Influence of clouds and aerosols to the haze of the sunshape
T2  - 30th ISES Biennial Solar World Congress 2011 : Kassel, Germany, 28 August - 2 September 2011. Vol. 5
Y1  - 2012
SP  - 3887
EP  - 3894
PB  - Curran
CY  - Red Hook, NY
ER  - 
TY  - CHAP
A1  - Sauerborn, Markus
T1  - Investigations to the influence of clouds and aerosols to the haze of the sunshape
T2  - SolarPACES 2011 : concentrating solar power and chemical energy systems : 20 - 23 September, 2011, Granada, Spain
Y1  - 2011
CY  - Granada
ER  - 
TY  - CHAP
A1  - Sattler, Johannes, Christoph
A1  - Caminos, Ricardo Alexander Chico
A1  - Ürlings, Nicolas
A1  - Dutta, Siddharth
A1  - Ruiz, Victor
A1  - Kalogirou, Soteris
A1  - Ktistis, Panayiotis
A1  - Agathokleous, Rafaela
A1  - Jung, Christian
A1  - Alexopoulos, Spiros
A1  - Atti, Vikrama Nagababu
A1  - Teixeira Boura, Cristiano José
A1  - Herrmann, Ulf
T1  - Operational experience and behaviour of a parabolic trough collector system with concrete thermal energy storage for process steam generation in Cyprus
T2  - AIP Conference Proceedings
Y1  - 2020
U6  - http://dx.doi.org/10.1063/5.0029278
IS  - 2303
SP  - 140004-1
EP  - 140004-10
ER  - 
TY  - CHAP
A1  - Sattler, Johannes, Christoph
A1  - Alexopoulos, Spiros
A1  - Caminos, Ricardo Alexander Chico
A1  - Mitchell, John C.
A1  - Ruiz, Victor C.
A1  - Kalogirou, Soteris
A1  - Ktistis, Panayiotis K.
A1  - Teixeira Boura, Cristiano José
A1  - Herrmann, Ulf
T1  - Dynamic simulation model of a parabolic trough collector system with concrete thermal energy storage for process steam generation
T2  - AIP Conference Proceedings
Y1  - 2019
U6  - http://dx.doi.org/10.1063/1.5117663
SN  - 0094243X
VL  - 2126
SP  - 150007-1
EP  - 150007-8
ER  - 
TY  - CHAP
A1  - Sattler, Johannes Christoph
A1  - Schneider, Iesse Peer
A1  - Angele, Florian
A1  - Atti, Vikrama
A1  - Teixeira Boura, Cristiano José
A1  - Herrmann, Ulf
T1  - Development of heliostat field calibration methods: Theory and experimental test results
T2  - SolarPACES conference proceedings
N2  - In this work, three patent pending calibration methods for heliostat fields of central receiver systems (CRS) developed by the Solar-Institut Jülich (SIJ) of the FH Aachen University of Applied Sciences are presented. The calibration methods can either operate in a combined mode or in stand-alone mode. The first calibration method, method A, foresees that a camera matrix is placed into the receiver plane where it is subjected to concentrated solar irradiance during a measurement process. The second calibration method, method B, uses an unmanned aerial vehicle (UAV) such as a quadrocopter to automatically fly into the reflected solar irradiance cross-section of one or more heliostats (two variants of method B were tested). The third calibration method, method C, foresees a stereo central camera or multiple stereo cameras installed e.g. on the solar tower whereby the orientations of the heliostats are calculated from the location detection of spherical red markers attached to the heliostats. The most accurate method is method A which has a mean accuracy of 0.17 mrad. The mean accuracy of method B variant 1 is 1.36 mrad and of variant 2 is 1.73 mrad. Method C has a mean accuracy of 15.07 mrad. For method B there is great potential regarding improving the measurement accuracy. For method C the collected data was not sufficient for determining whether or not there is potential for improving the accuracy.
KW  - Heliostat Field Calibration
KW  - Unmanned aerial vehicle
KW  - UAV
KW  - Quadrocopter
KW  - Camera system
Y1  - 2024
U6  - http://dx.doi.org/10.52825/solarpaces.v1i.678
SN  - 2751-9899 (online)
N1  - 28th International Conference on Concentrating Solar Power and Chemical Energy Systems, 27-30 September, Albuquerque, NM, USA
IS  - Vol. 1
PB  - TIB Open Publishing
CY  - Hannover
ER  - 
TY  - CHAP
A1  - Sattler, Johannes Christoph
A1  - Chico Caminos, Ricardo Alexander
A1  - Atti, Vikrama Nagababu
A1  - Ürlings, Nicolas
A1  - Dutta, Siddharth
A1  - Ruiz, Victor
A1  - Kalogirou, Soteris
A1  - Ktistis, Panayiotis
A1  - Agathokleous, Rafaela
A1  - Alexopoulos, Spiros
A1  - Teixeira Boura, Cristiano José
A1  - Herrmann, Ulf
T1  - Dynamic simulation tool for a performance evaluation and sensitivity study of a parabolic trough collector system with concrete thermal energy storage
T2  - AIP Conference Proceedings 2303
Y1  - 2020
U6  - http://dx.doi.org/10.1063/5.0029277
SN  - 0094-243X
SP  - 160004
PB  - American Institute of Physics
CY  - Melville, NY
ER  - 
TY  - CHAP
A1  - Sattler, Johannes Christoph
A1  - Atti, Vikrama
A1  - Alexopoulos, Spiros
A1  - Teixeira Boura, Cristiano José
A1  - Herrmann, Ulf
A1  - Dutta, Siddharth
A1  - Kioutsioukis, Ioannis
T1  - DNI forecast tool for the smart operation of a parabolic trough collector system with concrete thermal energy storage: Theory, results and outlook
T2  - SolarPACES conference proceedings
N2  - This work presents a basic forecast tool for predicting direct normal irradiance (DNI) in hourly resolution, which the Solar-Institut Jülich (SIJ) is developing within a research project. The DNI forecast data shall be used for a parabolic trough collector (PTC) system with a concrete thermal energy storage (C-TES) located at the company KEAN Soft Drinks Ltd in Limassol, Cyprus. On a daily basis, 24-hour DNI prediction data in hourly resolution shall be automatically produced using free or very low-cost weather forecast data as input. The purpose of the DNI forecast tool is to automatically transfer the DNI forecast data on a daily basis to a main control unit (MCU). The MCU automatically makes a smart decision on the operation mode of the PTC system such as steam production mode and/or C-TES charging mode. The DNI forecast tool was evaluated using historical data of measured DNI from an on-site weather station, which was compared to the DNI forecast data. The DNI forecast tool was tested using data from 56 days between January and March 2022, which included days with a strong variation in DNI due to cloud passages. For the evaluation of the DNI forecast reliability, three categories were created and the forecast data was sorted accordingly. The result was that the DNI forecast tool has a reliability of 71.4 % based on the tested days. The result fulfils SIJ’s aim to achieve a reliability of around 70 %, but SIJ aims to still improve the DNI forecast quality.
KW  - Direct normal irradiance forecast
KW  - DNI forecast
KW  - Parabolic trough collector
KW  - PTC
KW  - Thermal Energy Storage
Y1  - 2024
U6  - http://dx.doi.org/10.52825/solarpaces.v1i.731
SN  - 2751-9899 (online)
N1  - 28th International Conference on Concentrating Solar Power and Chemical Energy Systems, 27-30 September, Albuquerque, NM, USA
IS  - VOL. 1
PB  - TIB Open Publishing
CY  - Hannover
ER  - 
TY  - CHAP
A1  - Repschläger, Horst
A1  - Hafner, Bernd
A1  - Meliß, Michael
A1  - Philippi, Helga
A1  - Späte, Frank
T1  - Vergleich verschiedener Netzvarianten am Beispiel des geplanten solaren Nahwärmesystems für den Solar-Campus Jülich
T2  - 8. Symposium Thermische Solarenergie : Ort: Bildungszentrum der Hanns-Seidel-Stiftung, Kloster Banz, Staffelstein. Termin: 13. - 15. Mai 1998 / OTTI, Technologie-Kolleg
Y1  - 1998
SP  - 310
EP  - 314
PB  - OTTI
CY  - Regensburg
ER  - 
TY  - CHAP
A1  - Rendon, Carlos
A1  - Schwager, Christian
A1  - Ghiasi, Mona
A1  - Schmitz, Pascal
A1  - Bohang, Fakhri
A1  - Caminos, Ricardo Alexander Chico
A1  - Teixeira Boura, Cristiano José
A1  - Herrmann, Ulf
T1  - Modeling and upscaling of a pilot bayonettube reactor for indirect solar mixed methane reforming
T2  - AIP Conference Proceedings
Y1  - 2020
U6  - http://dx.doi.org/10.1063/5.0029974
IS  - 2303
SP  - 170012-1
EP  - 170012-9
ER  -